2019 KTM 450 SXF popping on decel

atrdrvr7
Posts
426
Joined
1/15/2013
Location
Houston, TX US
7/21/2018 8:35am
Just picked up a fresh one a few days ago. Took it out for a ride yesterday. Went through the normal break in procedures. The bike was popping on decel the whole day. Pretty annoying to say the least.

Checked the exhaust over for leaks and found none. Also noticed the spark arrestor screen in the silencer has a hole blown through it after riding. I have the TPS tool that I used on my 16'. Is the setting the same for adjustment .60-.64 for the sweet spot? Any other ideas? Thanks
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kb228
Posts
6161
Joined
1/31/2018
Location
Mansfield, OH US
7/21/2018 8:43am
If the bike has a new ecu and mapping the voltage is likely different. Look up a 19 service manual and see. Im putting my bets on the voltage being different and youre still off. I doubt you have an exhaust leak on a new bike.
blaze 57
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377
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4/11/2018
Location
Inchelium, WA US
7/21/2018 4:29pm
I remember someone else reported popping on their new Factory Editions 450's when they came out last Spring. My TPS on my new 450 FE was only .49 when I checked it. Bumped it to .60 but I never had any popping to begin with. I ended up sending my ECU to Tokyo Mods for a re-flash along with the FMF full exhaust. Big differance.
atrdrvr7
Posts
426
Joined
1/15/2013
Location
Houston, TX US
7/21/2018 5:22pm
blaze 57 wrote:
I remember someone else reported popping on their new Factory Editions 450's when they came out last Spring. My TPS on my new 450 FE was...
I remember someone else reported popping on their new Factory Editions 450's when they came out last Spring. My TPS on my new 450 FE was only .49 when I checked it. Bumped it to .60 but I never had any popping to begin with. I ended up sending my ECU to Tokyo Mods for a re-flash along with the FMF full exhaust. Big differance.
Thanks. Im going to run it up to .60 and see if it fixes the popping.
1
mx317
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4531
Joined
4/1/2008
Location
TN US
7/21/2018 7:45pm
Spark arrestor?

The Shop

blaze 57
Posts
377
Joined
4/11/2018
Location
Inchelium, WA US
7/21/2018 9:17pm
mx317 wrote:
Spark arrestor?
I think they are just some kind of funky screen. The screen mesh may not be fine enough to pass forestry approval.
sgrimmxdad
Posts
1489
Joined
7/23/2013
Location
Farmville, NC US
Fantasy
2109th
7/22/2018 1:54am
We had to adjust our TPS to get rid of the popping on our 18 FE! Was at around 52 and we went to 60. Just added the FMF and went to 62!
1

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